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masha68 [24]
3 years ago
8

Simplify the rational expression. State any excluded values.. . x-2/x^2+3x-10. . A. x^2. . B. x+5, where x is not equal to -5 .

. C. 1/x2 where x is not equal to -2 . . D. 1/x+5 where x is not equal to -5 .
Mathematics
1 answer:
max2010maxim [7]3 years ago
5 0

Answer:

D

Step-by-step explanation:

(x-2)/(x-2)(x+5)

1/(x+5)

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Rudiy27
A.) Integers are positive and negative counting numbers. So, in order to find the integer coefficients, round off the coefficients in the equation to the nearest whole number. The function for g(x) is:

g(x) = 3x²+3x

B.) Substitute x=4 to the two functions.

f(x) = 2.912345x²<span>+3.131579x-0.099999
</span>f(4) = 2.912345(4)²+3.131579(4)-0.099999
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g(x) = 3x²+3x
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C.) The percentage error is equal to:

Percentage error = |g(4) - f(4)|/f(4)  * 100
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D.) If x is a large number, for example x=10 or x=20, then g(x) would be an overestimate. This is because the value of x is raised to the power of 2. So, as the x increases, the corresponding function would increase exponentially. Even at x=4, g(x) is already an overestimate. What more for larger values of x? That means that the gap from the true answer f(x) would increase.
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Step-by-step explanation:

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